Improvement in window-screens



CQAL W'ERDEN.

. Window-Screens.

N0, 157,560, Patented Dec.8,187 4.

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UNITED STATES PATENT Grrron.

CYRUS A. WERDEN, OF WAUKEGAN, ILLINOIS, ASSIGNOR TO HIMSELF AND WILLIAMB. WERDEN, OF SAME PLACE.

IMPROVEMENT IN WINDOW-SCREENS.

Specification forming part of Letters Patent No. 157,560, dated December8, 1874; application filed October 31, 1874.

To all whom it may concern:

Be it known that I, OYRUs A. WERDEN, of Waukegan, in the county of Lakeand State of Illinois, have invented a new and valuable Improvement inWindow-Screen; and I do hereby declare that the following is a full,clear, and exact description of the construc tion and operation of thesame, reference being had to the annexed drawings, making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure l of the drawing is a representation of a front view, partsectional, of my windowscreen, and Fig. 2 is a horizontal sectional viewof the same. i

This invention has relation to window-frames which are adaptedto besnugly applied to frames of various sizes, for the purpose of excludingflies, mosquitoes, and other insects; and the nature of the inventionconsists in combining with the screen-frame a detacha ble block, fittinginto a groove of corresponding size in the vertical edge of the saidframe, and acted upon by springs, whereby the said block will becompelled to occupy and fill up the difference in width of a window andscreen frame. as will be hereinafter more fully explained.

In the annexed drawings, a to designate the vertical. and a/ a thehorizontal, bars of the frame of a window-screen, A. This screen may beof mosquito-net or of wire-cloth, and is removably attached to thescreen by means of vertical grooves b at each side of the frame, intowhich are fitted corresponding strips 1), as shown in Fig. 2. Byremoving these strips the net may be detached from the frame, for thepurpose of repairing or renewing it, when worn out. Along one or both ofthe vertical edges to aof this frame a deep rectangular groove, B, iscut, extending from the top to the bottom thereof, into which is fitteda detachable block, 0, of corresponding thickness, between which and.the bottom of the groove helical or other suitable springs, s, areapplied in any convenient number and manner. The block 0 is held andguided in the groove B by means of metallic strips 0, which are rigidlysecured to the upper and lower edges of the said block, and are receivedinto grooves z" in the upper and lower edges of the screen-frame. Theyare confined therein and prevented from casual detachment by means of arod, (1, and their upturned ends 0, as shown in Fig. 1.

I apply my adjustable screen in thefollowin g manner, to wit: The lowersash is run up a sufficient distance to allow of the introduction of thescreen frame in its place. The block 0 is then inserted between theguide-strips of the said sash, when, by cmnpressing the springs, thescreen-frame is allowed to enter the window-frame, the recoil of thesaid springs forcing the other side of the frame into the space betweenthe corresponding guide-strips upon the other side of the window-frame,securely holding it in place, and filling up all interstices.

I am aware that an adjustable block operated by a spring has heretoforebeen employed in connection with a wimlow-frame, and, therefore, I makeno broad claim to such invention.

What I claim as new, and desire to secure by Letters Patent, is-

The Window-screen A, provided with a longitudinal recess, B, end groovesi i, and rods (1 d, in combination with the detachable block 0, providedwith metal strips 0, having their ends 0 upturned, and springs S S,constructed substantially as described.

In testimony that I claim the above I have hereunto subscribed myname inthe presence of two witnesses.

CYRUS A. WERDEN.

Witnesses E. J osLYN, J AS. E. Low.

